# OC Root 2nd 3rd 4th PC Gene/Definition OC.110591 Archaea.96103 Thaumarchaeota.10349 - nkr.84 nkr:NKOR_00410 NAD-dependent epimerase/dehydratase; K02377 GDP-L-fucose synthase [EC:1.1.1.271] OC.110596 Archaea.21625 Thaumarchaeota.3552 Nitrososphaera.3697 nga.943 nga:Ngar_c09370 NAD-dependent epimerase/dehydratase OC.110596 Archaea.21625 Thaumarchaeota.3552 - nbv.148 nbv:T478_0147 3-beta hydroxysteroid dehydrogenase/isomerase family protein